chalk - a piece of chalk (or similar substance) used for writing on blackboards or other surfaces

calcite - a common mineral consisting of crystallized calcium carbonate; a major constituent of limestone

calcium carbonate - a salt found in nature as chalk or calcite or aragonite or limestone

whiteness, white - the quality or state of the achromatic color of greatest lightness (bearing the least resemblance to black)

amphetamine, pep pill, upper, speed - a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression

controlled substance - a drug or chemical substance whose possession and use are controlled by law

drawing chalk - colored chalks used by artists

tailor's chalk - chalk used by tailors to make temporary marks on cloth

writing implement - an implement that is used to write

chalk - a soft whitish calcite

draw - represent by making a drawing of, as with a pencil, chalk, etc. on a surface; "She drew an elephant"; "Draw me a horse"